Summary
ns1.jay.net has one IP number , via cname to
ns.jay.net , which also has a corresponding reverse pointer.
jay.net is a domain controlled by two nameservers at
jay.net themselves. They are on different IP networks. Incoming mail for
jay.net is handled by two mailservers also at
jay.net. They are on different IP networks.
jay.net has one IP number.
ns1.jay.net is hosted on a server in Denmark.